Thoát nước, Nước thải & Thông hơiCâu 150 / 360
An air admittance valve for an individual or branch fixture vent must be a listed device complying with which standard?
a.ASSE 1017
b.ASSE 1051
c.ASSE 1070
d.ASME A112.6
Giải thích
Individual and branch-type air admittance valves must be listed to ASSE 1051. Stack-type AAVs are covered by a different listing (ASSE 1050). Using a valve listed to the correct standard ensures it seals against sewer gas and admits air reliably.
Trích dẫn luật: 2022 California Plumbing Code (CPC) §918.0Luyện miễn phí toàn bộ 360 câu hỏi — không cần đăng ký.
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